Re: [MacPerl] Embedded Control Chars (fwd)

[Chuck Rice <Chuck@WildRice.com>]

At 12:21 PM -0700 10/17/97, Mark Manning/Muniz Eng. wrote:

>
> 	$theRecord = join( "\001", @X );
>
> and to split it back apart you just:
>
> 	@X = split( /\001/, $theRecord );
>
> Ok, but now you've gone into the area where Chris' program
> can mess you up because you are using control characters to
> denote a separator.

Wait a minute! I am new to Perl, but the way I understand things,
\001 are 4 ascii characters in a program, not a single byte
control character. When the program executes, that \001 does
get converted to a byte code, but if you open the program
with the perl editor and parsor and it zaped out all of the
non-printable characters, the \001 would still be there.

Likewise, if I opened the source file with BBEdit, I would
still see the \001. I would not have to turn on "show invisibles"
to see it.

Now the CR and LF characters ARE single bytes each. So if you
zapped out the LF characters before execution, you would not
end up zapping out and \010 (or is it \013) strings.

If this were not the case, then FTPing the file in ascii mode
would also zap out the \001 in

	@X = split( /\001/, $theRecord );

As well as fix the line endings. Is there something about
Perl that I have not learned yet?  -Chuck-

__________________________________________________________________________
Chuck Rice                                     <mailto:Chuck@WildRice.com>




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